[Elecraft] K3 on FM
Hello all I joined a 2m FM net yesterday, using my K3(10w) and transverter. It's the first time I've transmitted FM and I got poor audio reports. I'm using the same microphone (Kenwood MC43) and mic settings (gain 25, comp 25, FP,L) as for ssb, where I get plenty of modulation and good reports. In contrast, FM transmit has a very low audio level and there is a whistle/whine in the background. FM deviation is set to 5kHz. FM reception is fine, using the 13kHz filter. Any suggestions ? Maybe there's a menu setting I've missed ? Thanks John G4ZTR __ Information from ESET NOD32 Antivirus, version of virus signature database 3837 (20090208) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 on FM
Hi John, I have also experienced poor reports on FM. The audio is thin. The compressor does not work on FM at all. It is not a viable rig for FM at the moment. I will be using 10FM as well as transverting, so hopefully they will sort it out. 73 John G3YPZ www.traditional-jazz.com John Lemay wrote: Hello all I joined a 2m FM net yesterday, using my K3(10w) and transverter. It's the first time I've transmitted FM and I got poor audio reports. I'm using the same microphone (Kenwood MC43) and mic settings (gain 25, comp 25, FP,L) as for ssb, where I get plenty of modulation and good reports. In contrast, FM transmit has a very low audio level and there is a whistle/whine in the background. FM deviation is set to 5kHz. FM reception is fine, using the 13kHz filter. Any suggestions ? Maybe there's a menu setting I've missed ? Thanks John G4ZTR __ Information from ESET NOD32 Antivirus, version of virus signature database 3837 (20090208) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Output power difference - more
Ken Kopp-3 wrote: Readings at the 5 and 50W level appear to be unchanged and correct on all bands. The +10-15 watt discrepancy appears (only) at the 100W level. I observed the same thing about a week ago just after I had performed a recalibration: http://n2.nabble.com/Firmware-bug--td2268444.html#a2269043 . - Julian, G4ILO. K2 #392 K3 #222. http://www.g4ilo.com/ G4ILO's Shack http://www.ham-directory.com/ Ham Directoryhttp://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3 -- View this message in context: http://n2.nabble.com/K3-Output-power-difference---more-tp2295867p2296787.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Channel Hopping behavior?
I use the channel hopping capability on 60m and for some SSB nets on 40m. This morning I enabled channel hopping and checked the net frequencies on 40. Hearing nothing there, I hit A/B to move down to the CW part of the band. That worked, switching frequencies and mode as expected. Then I moved VFO A and was surprised that I was channel hopping back in the SSB part of the band, but in CW mode! Is that the intended behavior? My expectation was that A/B would cancel channel hopping. Checking the manual I see that is not documented (tapping RATE or FINE or changing bands cancels channel hopping according to the Users' Manual). 73, Randy, KS4L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KX1] KX1 #02140
Ed, You have made a wise choice. There is one thing you can do to make things easier when you add the KXB3080 - mount L6 on the bottom of the KX1 board during the initial build. Other than that small item, follow the manual carefully and build in the order indicated in the manual. The KX1 is packed tight with components, so pay particular attention to the 'mechanical' side of the instructions. Work at your own pace, and do not work on it when you are tired. If you are not experienced at soldering PC boards with thru-plated holes, take a look at the Soldering Tutorial on the Elecraft Builder's Resource page. For the KX1 especially, but it goes for other kits too, pay attention to the amount of solder - apply no more than necessary to fill the hole plus a very small amount to flow into a smooth fillet. Use a sufficiently high temperature (700-750 deg F) and watch the solder as it melts and flows - it should flow out to a smooth, almost invisible edge on both the component lead and the solder pad. Insufficient heat and the solder may melt, but not flow resulting in a bad connection, and excess solder can look like a solid connection, but mask a poorly heated solder joint. 73, Don W3FPR 73, Don W3FPR EMD wrote: Hello Elecrafters, Well I will start building my KX1 in a few days. I have been getting the required equipment and being a first time builder I feel a little over whelmed but reading all the the hints and tips on the reflector has made it a lot easier. So far I have what I think will get me started, the big item was a soldering station. I bought a Radio Shack Digital soldering station which is basically a Madell AT201D. I did not realize that the RS version did not come with extra tips but after a few minutes on the comments section I found out where the tips are available, at madell.com of course. The tip included I don't think would work well since it's a needle tip so I ordered the spade tip recommended by Elecraft, plus 2 extras. I also bought a anti static mat and Kester #44 solder 0.025 diameter 3.3% Flux from Digi-Key. My plan is to first build the radio and follow the alignment steps, then add the antenna tuner. Once the radio is complete I'll learn how to use it, not to mention CW, and then add the the 30 80 meter add on board. I thought about adding the 3080m board at the same time but since I have not built a kit since my high school days I don't want to get ahead of myself so I think the one thing at a time plan would be best for me. I have not bought any de-soldering equipment yet but but I'm sure that will be next on the list. I am looking forward to getting started and I'm already looking ahead to building the K1 and then the k2. Ed __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 on FM
Hi I've been running pre beta test firmware V2.92 for about a week. I has a revision for FM devation and AM compression. I have checked into several AM nets and 6 meter repeaters and have received very good audio reports. This relase has the VFO IND feature. Do not know when it will be released though but, should be soon. 73 Phil K8MBY - Original Message - From: john petters tjp...@traditional-jazz.com To: John Lemay j...@carltonhouse.eclipse.co.uk Cc: elecraft@mailman.qth.net Sent: Monday, February 09, 2009 5:44 AM Subject: Re: [Elecraft] K3 on FM Hi John, I have also experienced poor reports on FM. The audio is thin. The compressor does not work on FM at all. It is not a viable rig for FM at the moment. I will be using 10FM as well as transverting, so hopefully they will sort it out. 73 John G3YPZ www.traditional-jazz.com John Lemay wrote: Hello all I joined a 2m FM net yesterday, using my K3(10w) and transverter. It's the first time I've transmitted FM and I got poor audio reports. I'm using the same microphone (Kenwood MC43) and mic settings (gain 25, comp 25, FP,L) as for ssb, where I get plenty of modulation and good reports. In contrast, FM transmit has a very low audio level and there is a whistle/whine in the background. FM deviation is set to 5kHz. FM reception is fine, using the 13kHz filter. Any suggestions ? Maybe there's a menu setting I've missed ? Thanks John G4ZTR __ Information from ESET NOD32 Antivirus, version of virus signature database 3837 (20090208) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 on FM
Note that TxEQ is in effect in FM mode. You may have set it up for optimum SSB punch in conjunction with CMP. The best settings for FM may be different. 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KX1] KX1 #02140
Hi Don, That's a great idea with L6 the less rework I have to do only increases my chances of success. The soldering station I bought has three preset temps and you can also set an exact temp so hopefully cold solder joints will not be a problem. Thanks for the tip, Ed Doyle KE7HGA Sent from my Verizon Wireless BlackBerry -Original Message- From: Don Wilhelm-4 (via Nabble) ml-user+39068-2029048...@n2.nabble.com Date: Mon, 09 Feb 2009 05:49:57 To: EMDedwarddo...@mac.com Subject: Re: KX1 #02140 Ed, You have made a wise choice. There is one thing you can do to make things easier when you add the KXB3080 - mount L6 on the bottom of the KX1 board during the initial build. Other than that small item, follow the manual carefully and build in the order indicated in the manual. The KX1 is packed tight with components, so pay particular attention to the 'mechanical' side of the instructions. Work at your own pace, and do not work on it when you are tired. If you are not experienced at soldering PC boards with thru-plated holes, take a look at the Soldering Tutorial on the Elecraft Builder's Resource page. For the KX1 especially, but it goes for other kits too, pay attention to the amount of solder - apply no more than necessary to fill the hole plus a very small amount to flow into a smooth fillet. Use a sufficiently high temperature (700-750 deg F) and watch the solder as it melts and flows - it should flow out to a smooth, almost invisible edge on both the component lead and the solder pad. Insufficient heat and the solder may melt, but not flow resulting in a bad connection, and excess solder can look like a solid connection, but mask a poorly heated solder joint. 73, Don W3FPR 73, Don W3FPR EMD wrote: Hello Elecrafters, Well I will start building my KX1 in a few days. I have been getting the required equipment and being a first time builder I feel a little over whelmed but reading all the the hints and tips on the reflector has made it a lot easier. So far I have what I think will get me started, the big item was a soldering station. I bought a Radio Shack Digital soldering station which is basically a Madell AT201D. I did not realize that the RS version did not come with extra tips but after a few minutes on the comments section I found out where the tips are available, at madell.com of course. The tip included I don't think would work well since it's a needle tip so I ordered the spade tip recommended by Elecraft, plus 2 extras. I also bought a anti static mat and Kester #44 solder 0.025 diameter 3.3% Flux from Digi-Key. My plan is to first build the radio and follow the alignment steps, then add the antenna tuner. Once the radio is complete I'll learn how to use it, not to mention CW, and then add the the 30 80 meter add on board. I thought about adding the 3080m board at the same time but since I have not built a kit since my high school days I don't want to get ahead of myself so I think the one thing at a time plan would be best for me. I have not bought any de-soldering equipment yet but but I'm sure that will be next on the list. I am looking forward to getting started and I'm already looking ahead to building the K1 and then the k2. Ed __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ This email is a reply to your post @ http://n2.nabble.com/KX1--02140-tp2295382p2297257.html You can reply by email or by visting the link above. -- View this message in context: http://n2.nabble.com/KX1--02140-tp2295382p2297456.html Sent from the [KX1] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 - AFSK A
I have been busy setting up MMVARI together with N1MM to use in RTTY contests. I have not encountered any real problems, however I am a little confused when it comes to using the K3 in the AFSK A mode. I am using this mode because it always has the RTTY LSB selected as default. The audio tones are fed into the K3 via the LINE IN. In the Data Mode section of the K3 Owners Manual it says:- AFSK A also uses Audio-shift transmit, but is optimized for RTTY. The VFO displays the RTTY Mark frequency, and LSB is normal. I am not seeing the Mark frequency displayed on the VFO, but one which seems to represent the suppressed carrier. The displayed frequency is offset from the Mark frequency by about 1.3 kHz. This would correspond with the middle of the K3 filter passband. It would be nice to display the real (yes I know it's audio) Mark frequency as this seems to be a standard. a) Am I missing something in my K3 setup ? or b) The manual is wrong ? or c) Something else ? 73 Stewart G3RXQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - AFSK A
Hello Stewart! Be sure you use the PITCH control to select the tone pair you desire to use. The K3 will then display the RF frequency corresponding to the RTTY Mark tone. As you change pitches, the frequency display won't alter but the offset of the radios suppressed carrier will move in accordance with the selected PITCH. If you engage the dual tone RTTY filter, it will be set up for the selected PITCH. Be sure the RTTY program is set to the same pitch. Some programmes are waterfall-based and change the Tx tones to match the Rx tones. If you are using such a program, you may be better off with DATA A, and if you want LSB then hold ALT to change sidebands for DATA A so that you see the LSB icon. IN thie case of using DATA A, the radio will display the suppressed carrier frequency rather than the MARK frequency. 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - AFSK A
I am not seeing the Mark frequency displayed on the VFO, but one which seems to represent the suppressed carrier. The displayed frequency is offset from the Mark frequency by about 1.3 kHz. This would correspond with the middle of the K3 filter passband. What do you have set for pitch in AFSK A? If your mark is 2125 but the AFSK A Pitch is 915, you would see an approximately 1300 Hz offset. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Stewart Baker Sent: Monday, February 09, 2009 10:02 AM To: Elecraft Reflector Subject: [Elecraft] K3 - AFSK A I have been busy setting up MMVARI together with N1MM to use in RTTY contests. I have not encountered any real problems, however I am a little confused when it comes to using the K3 in the AFSK A mode. I am using this mode because it always has the RTTY LSB selected as default. The audio tones are fed into the K3 via the LINE IN. In the Data Mode section of the K3 Owners Manual it says:- AFSK A also uses Audio-shift transmit, but is optimized for RTTY. The VFO displays the RTTY Mark frequency, and LSB is normal. I am not seeing the Mark frequency displayed on the VFO, but one which seems to represent the suppressed carrier. The displayed frequency is offset from the Mark frequency by about 1.3 kHz. This would correspond with the middle of the K3 filter passband. It would be nice to display the real (yes I know it's audio) Mark frequency as this seems to be a standard. a) Am I missing something in my K3 setup ? or b) The manual is wrong ? or c) Something else ? 73 Stewart G3RXQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - AFSK A
Hi Lyle, Thanks for your reply. A bit more investigation shows that switching between AFSK A, DATA A, USB or LSB makes no difference as far as the frequency offset is concerned. What does make a difference is switching between Digital mode and CW/SSB in N1MM... In non Digital Modes the K3 VFO frequency display corresponds exactly with the Bandmap for any K3 mode selected. However, it appears that in the Digital modes N1MM offsets the K3 carrier frequency whilst showing the correct Mark frequency on the Bandmap and MMVARI cursor. Or, I think that is what is happening... My brain hurts ! 73 Stewart G3RXQ On Mon, 09 Feb 2009 07:11:25 -0800, Lyle Johnson wrote: Hello Stewart! Be sure you use the PITCH control to select the tone pair you desire to use. The K3 will then display the RF frequency corresponding to the RTTY Mark tone. As you change pitches, the frequency display won't alter but the offset of the radios suppressed carrier will move in accordance with the selected PITCH. If you engage the dual tone RTTY filter, it will be set up for the selected PITCH. Be sure the RTTY program is set to the same pitch. Some programmes are waterfall-based and change the Tx tones to match the Rx tones. If you are using such a program, you may be better off with DATA A, and if you want LSB then hold ALT to change sidebands for DATA A so that you see the LSB icon. IN thie case of using DATA A, the radio will display the suppressed carrier frequency rather than the MARK frequency. 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 on FM
Lyle Johnson wrote: Note that TxEQ is in effect in FM mode. You may have set it up for optimum SSB punch in conjunction with CMP. The best settings for FM may be different. Please can we have per-mode EQ settings (and no EQ for DATA)? - Julian, G4ILO. K2 #392 K3 #222. http://www.g4ilo.com/ G4ILO's Shack http://www.ham-directory.com/ Ham Directoryhttp://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3 -- View this message in context: http://n2.nabble.com/K3-on-FM-tp2296563p2298084.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Key out
Hi Phil, If the 30L-1 keying input, with its very high negative voltage, was ever hooked directly to the K3's keying output, there is a very good chance you may have destroyed the K3s output keying device. Eric WA6HHQ Phil LaMarche wrote: I've had many wonderful emails with suggestions and I thank you. Let me be more specific: The Amp Keyer works OK. The 30L-1 keys OK. The tested cable coming out of the Key Out on the back of the K3 isn't working properly. It's in the closed position. If I take the other end of the cable from the Key Out and plug into the amp keyer, it keys it without my keying the K3. If I hook it direct to the 30L-1 it keys the amp. I'm presuming the circuit is faulty in the K3? Ideas? Phil Philip LaMarche LaMarche Enterprises, Inc. _www.instantgourmetspices.com_ http://www.instantgourmetspices.com/ www.w9dvm.com http://www.w9dvm.com/ 800-395-7795 pin 02 727-944-3226 FAX 727-937-8834 NASFT 30210 K3 #1605 W9DVM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 to SteppIR interface communication
I recently replaced Icom stuff with a K3. Now I am trying to get all the stuff in the shack that is supposed to communicate with each other to do so. Right now I am working on the K3 to SteppIR interface. I have a clone of the SteppIR S13 cable and the K3 is connected directly to the SteppIR Data In port. The SteppIR interface is set to KENW at 9600 bps; the K3 RS232 is set to 9600 bps. SteppIR does not follow band changes. Anyone got a suggestion for getting this interface to work? Jim N1NK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Aux AF Jack
Hello all,I accidentally plugged my internal battery into the AUX AF jack instead of the AUX +12 jack. You can imagine what happened. I fried the firmware, which was okay because it needed to be replaced anyway. Now that the new firmware is in, the receiver is deaf. I traced that problem to U11 on the RF Board (Detector). There is no signal going to the BFO, and pin 6 is 'microphonic'. The signal from the IF Amp/Filter seems to be fine, and all of the DC voltages on the pins of the NE602 are to spec. I do not have much experience repairing my K2. Are there any 'gotchas' I should know about with regard to the detector/bfo interface? I only want to take the thing apart once if I can help it.they don't call me sparky for nothin'.Thanks,Jim __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Aux AF Jack
You could always send it in and have Elecraft repair it to avoid further “sparking” J 73, Bill K9YEQ From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Giercyk Sent: Monday, February 09, 2009 10:43 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Aux AF Jack Hello all, I accidentally plugged my internal battery into the AUX AF jack instead of the AUX +12 jack. You can imagine what happened. I fried the firmware, which was okay because it needed to be replaced anyway. Now that the new firmware is in, the receiver is deaf. I traced that problem to U11 on the RF Board (Detector). There is no signal going to the BFO, and pin 6 is 'microphonic'. The signal from the IF Amp/Filter seems to be fine, and all of the DC voltages on the pins of the NE602 are to spec. I do not have much experience repairing my K2. Are there any 'gotchas' I should know about with regard to the detector/bfo interface? I only want to take the thing apart once if I can help it.they don't call me sparky for nothin'. Thanks, Jim __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Aux AF Jack
Indeed, but since I did build it I think it's only fitting that I personally spark it :) I hadn't had the cover off the K2 in years, so I forgot where the plugs go. I am planning on adding the KPA100 soon, so that solve that problem. Thanks,Jim--- b...@creeksidecomputing.com wrote:From: "Bill Johnson" b...@creeksidecomputing.comTo: j...@giercyk.com, elecraft@mailman.qth.netSubject: RE: [Elecraft] Aux AF JackDate: Mon, 9 Feb 2009 10:50:29 -0600 You could always send it in and have Elecraft repair it to avoid further “sparking” J 73, Bill K9YEQ From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Giercyk Sent: Monday, February 09, 2009 10:43 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Aux AF Jack Hello all, I accidentally plugged my internal battery into the AUX AF jack instead of the AUX +12 jack. You can imagine what happened. I fried the firmware, which was okay because it needed to be replaced anyway. Now that the new firmware is in, the receiver is deaf. I traced that problem to U11 on the RF Board (Detector). There is no signal going to the BFO, and pin 6 is 'microphonic'. The signal from the IF Amp/Filter seems to be fine, and all of the DC voltages on the pins of the NE602 are to spec. I do not have much experience repairing my K2. Are there any 'gotchas' I should know about with regard to the detector/bfo interface? I only want to take the thing apart once if I can help it.they don't call me sparky for nothin'. Thanks, Jim __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 to SteppIR interface communication
One of the necessary steps is to set the K3's CONFIG:AUTOINF to AUTO 1 so that the K3 sends band data on its RS232 port. Could that be the issue? Dick, K6KR From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Spears Sent: Monday, February 09, 2009 8:38 AM To: elecraft@mailman.qth.net; step...@yahoogroups.com Subject: [Elecraft] K3 to SteppIR interface communication I recently replaced Icom stuff with a K3. Now I am trying to get all the stuff in the shack that is supposed to communicate with each other to do so. Right now I am working on the K3 to SteppIR interface. I have a clone of the SteppIR S13 cable and the K3 is connected directly to the SteppIR Data In port. The SteppIR interface is set to KENW at 9600 bps; the K3 RS232 is set to 9600 bps. SteppIR does not follow band changes. Anyone got a suggestion for getting this interface to work? Jim N1NK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 to SteppIR interface communication
Hi Jim, I use a SteppIR with my K3 successfully by setting the baud rate to 4800. Same for the K2. 73, Dick, W0NTA Jim Spears wrote: I recently replaced Icom stuff with a K3. Now I am trying to get all the stuff in the shack that is supposed to communicate with each other to do so. Right now I am working on the K3 to SteppIR interface. I have a clone of the SteppIR S13 cable and the K3 is connected directly to the SteppIR Data In port. The SteppIR interface is set to KENW at 9600 bps; the K3 RS232 is set to 9600 bps. SteppIR does not follow band changes. Anyone got a suggestion for getting this interface to work? Jim N1NK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/K3-to-SteppIR-interface-communication-tp2298144p2298335.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 to SteppIR interface communication
Mine is set to set as KENW baud 4800. 73 de KE4WY Jim -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dick Housden, W0NTA Sent: Monday, February 09, 2009 12:12 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 to SteppIR interface communication Hi Jim, I use a SteppIR with my K3 successfully by setting the baud rate to 4800. Same for the K2. 73, Dick, W0NTA Jim Spears wrote: I recently replaced Icom stuff with a K3. Now I am trying to get all the stuff in the shack that is supposed to communicate with each other to do so. Right now I am working on the K3 to SteppIR interface. I have a clone of the SteppIR S13 cable and the K3 is connected directly to the SteppIR Data In port. The SteppIR interface is set to KENW at 9600 bps; the K3 RS232 is set to 9600 bps. SteppIR does not follow band changes. Anyone got a suggestion for getting this interface to work? Jim N1NK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/K3-to-SteppIR-interface-communication-tp2298144p2298335 .html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] XV50 Alignment Questions
I'm working on Part V of the alignment RF Power Amplifier Quiescent Current Adjustment, which calls for R39 to be adjusted for a reading of 20 mV. The most I can get out of it is 18.5 mV. Is that close enough? Part VI - Filter Alignment: When keying the transmitter and adjusting L12 to L17 the readings on my DMM are all over the map; they usually fall from an initial reading and settle down after 10 seconds or so. Then they swing around a fair bit such that only gross movements of the slugs are visible. Unkey the transmitter, move the diddle stick to the next slug and rekey the transmitter and you're starting with a whole new set of numbers. Again, fine adjustments of the slug are masked by the constant variation of the voltage. Any ideas? Once again, any thoughts would be greatly appreciated. 73, Ken Alexander, VE3HLS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] new K3
I just received K3 #2626 last week. Got it up going this past weekend. I'm a DXer Babys first QSO ever was?this AM.It ?was a UA0 on 160m? CW!! ?It's gg to be?raised correctly Hi! I drive an Ameritron AL 811h. I have an AmpKeyer inline no problems I spend most of my radio time studying the OP manual but I can't find a figure [ in DB ]?for the? PRE/ATT selector. Am I missing it? k9il __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] new K3
Attenuator gain is -10dB, and preamp gain is 11dB according to sheet 4 of the RF board schematic. Bob NW8L On Mon, Feb 9, 2009 at 10:26 AM, greenacres...@aol.com wrote: I spend most of my radio time studying the OP manual but I can't find a figure [ in DB ] for the PRE/ATT selector. Am I missing it? k9il __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 - SteppIR comm problem
I should have pointed out that the specific problem I am trying to solve now is a hard connect from K3 RS232 port to SteppIR Data In port. No Y cable, no PC based software involved. I am not convinced that the SteppIR is listening. Jim N1NK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Bad speaker in K2
My K2 seems to have a bad speaker - sound from the speaker is distorted and scratchy. An external speaker, as well as headphones, sounds fine. I assume I need a new speaker - please correct me if I'm missing something, as it looks like the same circuit drives internal external speaker, and headphones. geoff - W1OH -- * Geoff Allsup, W1OH gall...@whoi.edu or w...@whoi.edu Research Engineer Upper Ocean Processes Group Woods Hole Oceanographic Institution Woods Hole, MA, USA * __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Internal RFI
Unplug your antenna or simply switch to null RX antenna, you will find several continuous wave signals on a band. The strength can be up to S4. When you tune to the signal and click on (the big inductor on) KSYN3 board, you can even hear the sound on the speaker/phones. Change the position of the TMP cables will reduce the signal strength, but might increase the strength on some other frequencies. 73, Steve -- View this message in context: http://n2.nabble.com/Internal-RFI-tp2298500p2298500.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - SteppIR comm problem
Perhaps you're not getting band data from the K3. Try connecting the K3 Utility to the K3, select the K3 Utility's Command Tester tab and move the K3 VFO A knob and make band changes with the K3's band selector. You should observe IF data being sent from the K3 to the PC program when the VFO stops and when the band is changed with the K3's bandswitch. If that's not happening, your K3 isn't sending band change data that the SteppIR controller depends upon. Then type AI1; (including the semicolon) in the command tester input screen and repeat this, turning VFO A and changing bands. Dick, K6KR From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Spears Sent: Monday, February 09, 2009 9:38 AM To: step...@yahoogroups.com; elecraft@mailman.qth.net Subject: [Elecraft] K3 - SteppIR comm problem I should have pointed out that the specific problem I am trying to solve now is a hard connect from K3 RS232 port to SteppIR Data In port. No Y cable, no PC based software involved. I am not convinced that the SteppIR is listening. Jim N1NK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - SteppIR comm problem
Jim, I have mine hard connected the way you describe and it communicates OK with my K3 at 38.4kB with KENW mode. As has been said before AUTO INF=1 and SteppIR in General Mode. 73 Stewart G3RXQ On Mon, 9 Feb 2009 12:37:42 -0500, Jim Spears wrote: I should have pointed out that the specific problem I am trying to solve now is a hard connect from K3 RS232 port to SteppIR Data In port. No Y cable, no PC based software involved. I am not convinced that the SteppIR is listening. Jim N1NK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] another firmware suggestion
i would like to have a double beep or something similar along with the flashing tx LED and display of MCU LD described in the section forcing a firmware download on page 42 of the manual. Hopefully, I'll never need this, but it would sure be nice for a blind op. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 AFSK remains unrepaired?
Lyle (KK7P) and I are working on a field-test firmware release that corrects all known issues with AFSK A mode. We'll be sending it to several customers this afternoon, and if all goes well it will be released at beta by Wednesday. 73, Wayne N6KR --- http://www.elecraft.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - SteppIR comm problem
Jim, in a conversation I had with Ron, the UK distributor for SteppIR, who also has a K3, he suggested the following fixes a problem for some. As I don't have a SteppIR, I can't add to this: To use a SteppIR antenna with the K3 it may be necessary to use a serial cable with pin 7 disconnected at the K3 end of the cable and to set the K3 menu item PTT-KEY to OFF-OFF It may help someone, even if it's not a fix for your issue Jim. 73 Dave, G4AON K3/100 #80 I should have pointed out that the specific problem I am trying to solve now is a hard connect from K3 RS232 port to SteppIR Data In port. No Y cable, no PC based software involved. I am not convinced that the SteppIR is listening. Jim N1NK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] For Sale Complete K2 QRP Station
Rod Ai7NN wrote: K2 SN4740, including: o KAT2 Ant Tuner o KNB2 Noise Blanker Superantennas PW1, breifcase Portable whip antenna 40-10m coverage Vibroplex Code Warrior Junior Kenwood HS6 communication headphones Radio Shack 13.8v/3amp Linear Power Supply, MN 22-504 Elecraft DL1 20W Dummy Load Elecraft XG1 Signal Generator Misc interconnect cables, HB Noise generator, maybe a few of surprises :-) All items in excellent condition, used very little. $600 Shipped/Insured CONUS Haven't been on the air for 2 or more years, probably won't be. Time to find a home for this stuff were it can be used. -- 73, Rod Ai7NN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/For-Sale-Complete-K2-QRP-Station-tp2269943p2286927.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] Elecraft roofing filters
I would say that you don't really need all those filters. The DSP filter does all the heavy lifting except for removing the artifacts from signals that are inside the pass band of the roofing filter. I have the 2.7k, 500 Hz and 250 Hz in my main receiver and just the 2.7K and 500 Hz in my second receiver. I don't feel the need for more, but I have zero interest in FM, AM and ESSB. Willis 'Cookie' Cooke K5EWJ --- On Fri, 2/6/09, Kjeld Holm k...@kh-translation.dk wrote: From: Kjeld Holm k...@kh-translation.dk Subject: Re: [Elecraft] [K3] Elecraft roofing filters To: elecraft@mailman.qth.net Date: Friday, February 6, 2009, 12:31 AM Dear all, Once and again: Thanks to all for very interesting and informative answers. Right now my conclusion according to my planed way of operation is the following setup 2 pcs KFL3A-2.8_2.7sw replacement K3 and KRX3 2 pcs KFL3A-1.8K SSB 2 pcs KFL3A-200 5-pole CW + matching 2 pcs KFL3A-400 CW 2 pcs KFL3B-FM FM For the purpose of working as many DXCC countries as possible including picking new ones during contests on crowded bands. As I understand this configuration will not allow me to receive or transmit on AM but it will maybe allow ESSB later if the firmware can be modified to use the FM filter for ESSB. Any further comments before my ordering will be appreciated. Vy 73 OZ1CCM Kjeld -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kjeld Holm Sent: 5. februar 2009 17:27 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3] Elecraft roofing filters Dear all, Thanks for all the kind answers. Sorry for all that fuss. Somehow I mixed up everything so I ended up thinking of some nonsense like 1.0 kHz for SSB. :-o I will go for 250 Hz and 400 Hz for CW plus 2.8 kHz for SSB. And also filters for AM and FM. Vy 73 OZ1CCM Kjeld -Original Message- From: W0MU Mike Fatchett [mailto:w...@w0mu.com] Sent: 5. februar 2009 15:28 To: 'Kjeld Holm' Subject: RE: [Elecraft] [K3] Elecraft roofing filters They are available on the website. KFL3A-1.0K 1 kHz, 8-pole roofing filter 125.95 I have one in my K3 but I don't use it too much. You might want to use it over a 250 or 500 filter to listen to a pile up so you can hear if the station is working people above or below his frequency. I have listened to SSB a bit on the filter and while very narrow for SSB you can hear the station. The better question might be, what modes do you like to operate? I am about to order a second K3 and I was going to go with the following filters. 2.8 replacing the stock 2.7/ AM/ FM/ 400 or 500 and 250. If you never play to transmit on AM or want to do ESSB or FM those slots would be available. The K3 I have now has the 2.7 which is being replaced with the 2.8/1.8/1.0/400/200 in the main rcv, 2.8/400 in the sub. Mike W0MU A slip of the foot you may soon recover, but a slip of the tongue you may never get over. Ben Franklin -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kjeld Holm Sent: Thursday, February 05, 2009 5:44 AM To: 'ElecraftList' Subject: [Elecraft] [K3] Elecraft roofing filters Dear all, In the Roofing Filter Notes from Wayne and Eric link on the Order page I see the two sentences: Add narrower/wider filters as you prefer. I like to use the 1.0 kHz crystal filter when tuning a crowded band or listening to a pile up. Can anyone point me to a place that can tell me what the 1.0 kHz crystal filter is, where to obtain one and when it is worth using? Vy 73 OZ1CCM Kjeld __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 builders have company
This should be some comfort to K2 builders who have problems due to a bad solder joint. There are problems and then there are PROBLEMS. http://news.bbc.co.uk/2/hi/science/nature/7880223.stm 73, Oliver Johns, W6ODJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 builders have company
...and, as the faulty solder joint was in one of the supercooled magnet sections it gives new meaning to the term 'cold solder joint.' (sorry) Don K7FJ This should be some comfort to K2 builders who have problems due to a bad solder joint. There are problems and then there are PROBLEMS. http://news.bbc.co.uk/2/hi/science/nature/7880223.stm 73, Oliver Johns, W6ODJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 builders have company
I'd just like to say for the record that I was here in Toronto the whole time they were building that thing! I've never even been to Switzerland or France, especially with a soldering iron in hand. This wouldn't have happened if Elecraft sold particle accelerator kits. 73 - Ken --- On Mon, 2/9/09, O. Johns ojo...@metacosmos.org wrote: From: O. Johns ojo...@metacosmos.org Subject: [Elecraft] K2 builders have company To: Elecraft@mailman.qth.net Received: Monday, February 9, 2009, 11:28 PM This should be some comfort to K2 builders who have problems due to a bad solder joint. There are problems and then there are PROBLEMS. http://news.bbc.co.uk/2/hi/science/nature/7880223.stm 73, Oliver Johns, W6ODJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 sub-receiver usefulness?
Hello group, Someone mentioned in one of the reflector emails that the new firmware under development will allow independent band switching/monitoring between VFO's without a sub receiver. Am I correct in my understanding then that without a sub receiver, this firmware will allow tuning and monitoring of separate bands? If that is indeed the case, can someone please clarify for me how that can accomplished with a single receiver? On a separate note, apart from diversity receive, I'm curious to know how other people are utilizing their sub receiver? The reason I ask is I'm finalizing my purchase of a K3, and am trying to determine whether it's necessary to fully load up both receivers now. At this point, I'm ready to purchase 2 general coverage modules plus 2 each of the following filters: 250KHz, 400KHz, 2.8Khz, 6KHz, 13KHz. I'd like to have the ability to monitor PSK31, FM or SW broadcast on the sub, while monitoring phone or engaging in a phone QSO on the main; both receivers being on separate bands. That's just one example. Another could be to monitor SW broadcast on the main while listening to 10m FM on the sub. Do I need to install the AM or FM filters in the sub to monitor SW or FM or can the sub's DSP take care of it? 73, James KC2UEE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 sub-receiver usefulness?
On Mon, 2009-02-09 at 21:02 -0500, James Sarte wrote: Hello group, Someone mentioned in one of the reflector emails that the new firmware under development will allow independent band switching/monitoring between VFO’s without a sub receiver. Am I correct in my understanding then that without a sub receiver, this firmware will allow tuning and monitoring of separate bands? If that is indeed the case, can someone please clarify for me how that can accomplished with a single receiver? You can monitor two different bands at once with a single receiver yes but you can't listen to both of them at the same time. Essentially you still have the exact same setup that the radio does today. You have VFO A and VFO B just like you already do. The only difference is that VFO A and VFO B can be on different bands now. So you can have VFO A on 7.029 and VFO B on 14.029 and as you press the A/B button you kick back and forth between the two bands. You can also press and hold REV and switch between them temporarily. This change will also allow you to use split mode across bands. Many other radio's allow this. On a separate note, apart from diversity receive, I’m curious to know how other people are utilizing their sub receiver? The reason I ask is I’m finalizing my purchase of a K3, and am trying to determine whether it’s necessary to fully load up both receivers now. At this point, I’m ready to purchase 2 general coverage modules plus 2 each of the following filters: 250KHz, 400KHz, 2.8Khz, 6KHz, 13KHz. I’d like to have the ability to monitor PSK31, FM or SW broadcast on the sub, while monitoring phone or engaging in a phone QSO on the main; both receivers being on separate bands. That’s just one example. Another could be to monitor SW broadcast on the main while listening to 10m FM on the sub. Do I need to install the AM or FM filters in the sub to monitor SW or FM or can the sub’s DSP take care of it? One thing is that while in a QSO you won't be able to hear out of any of them while in TX. But when you're monitoring you'll be able to hear both at once. You'll need the filters to be able to receive those modes in full glory but you can receive AM just fine with just the 2.7K filter in SSB mode. You can get a lot done with just the stock radio. Often you can get a lot done with just one general coverage rx filter but you'll have more flexibility and the ability to listen to two out of band freqs... 73, James KC2UEE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 sub-receiver usefulness?
James, You might want to reconsider whether you are listening to the SW broadcast on the main or on the sub. The low pass filter will be on the main antenna band selection, and if the subreceiver is attempting to receive a signal above the main receiver frequency, you will see a message flashed in the VFO B saying USE SUB RX. That is an indication that the main RX LPF is attenuating the sub-rx signal. If the main RX is at a higher frequency than the sub-rx, I do not believe that is any problem, but when the situation is reversed, the LPF will cut the response on the sub-rx. 73, Don W3FPR James Sarte wrote: Hello group, Someone mentioned in one of the reflector emails that the new firmware under development will allow independent band switching/monitoring between VFO’s without a sub receiver. Am I correct in my understanding then that without a sub receiver, this firmware will allow tuning and monitoring of separate bands? If that is indeed the case, can someone please clarify for me how that can accomplished with a single receiver? On a separate note, apart from diversity receive, I’m curious to know how other people are utilizing their sub receiver? The reason I ask is I’m finalizing my purchase of a K3, and am trying to determine whether it’s necessary to fully load up both receivers now. At this point, I’m ready to purchase 2 general coverage modules plus 2 each of the following filters: 250KHz, 400KHz, 2.8Khz, 6KHz, 13KHz. I’d like to have the ability to monitor PSK31, FM or SW broadcast on the sub, while monitoring phone or engaging in a phone QSO on the main; both receivers being on separate bands. That’s just one example. Another could be to monitor SW broadcast on the main while listening to 10m FM on the sub. Do I need to install the AM or FM filters in the sub to monitor SW or FM or can the sub’s DSP take care of it? 73, James KC2UEE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Birdies
I recently completed K3 #2623 and everything went very smoothly, except that I'm really surprised at all the birdies I can hear on the main receiver with the antenna input simply looking into a precision dummy load (or open circuit ... no difference either way). 20m is clearly the worst, with over 50 discernible birdies ranging from barely readable to S4 on the meter. The majority are S0 and S1, but I had three each on 20m and 40m that were S2 or louder. They are definitely synthesizer artifacts since their pitch jumps in large steps as I tune across them. All of this is in the main receiver ... I can find only a very few really weak birdies in the subreceiver.I didn't rigorously check all of the bands, but 15m and 10m are virtually clean, even on the main receiver, and 80m and 40m have roughly ten noticeable birdies each (main receiver only). I had previously taken notice of the comments on this reflector and in the manual about shielding and good connections, so while building the rig I made a special effort to make sure all connectors were firmly seated and all ground screws were tight. The mail list archives have a comment from one fellow who improved his birdie situation by recalibrating the synthesizers, but I tried that and it didn't make any difference. Most of the relevant postings suggested adjusting cable positioning. So I popped the lid off the K3 this evening and (using a thin wooden dowel) moved various cables around while listening to the birdies. I was able to make most of them completely go away by positioning the cables in one place or another, but it was amazing to see how sensitive the placement was. In the case of one cable, literally a couple of millimeters made the difference between an S4 birdie and ESP copy. And it wasn't just making sure that a particular cable was close as possible to a grounded shield or furthest from some other point. In some cases, the optimum position was a particular distance from something ... it was like tuning an L-C circuit. While I was at it I double checked every cable connector and they aren't the problem ... wiggling them had no impact on the birdies. I kept playing around with cable positioning until I got the best possible combination. In most cases, nulling the strongest birdies put almost all of the weaker ones below the noise floor, but in a few cases nulling one birdie made a different one stronger. Of the birdies I could previously hear on 20m, roughly 30 are now either gone or barely readable. Of the remaining ones, all except one are S1 or less. I ended up with only one really objectionable birdie hitting S4 on 14186.6. I'm pretty sure that one or two of the cables are going to relax and shift over time, so I'll probably see some of the birdies reappear, but in all reality none of them are likely to be disruptive. On CW I can use a narrow bandwidth to make all of them go away, and on SSB the notch will do the same. And since they all tune so much faster than real signals, it doesn't take too much to distinguish them and mentally ignore them. Still, I'm wondering if this is normal behavior, or whether all these birdies might be a symptom of something else out of whack. Comments appreciated. 73, Dave AB7E __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
